Die-press mechanism or the like.



G. D. MCDONALD & G. E. BNNES.

DIE PRESS MECHANISM 011 THE LIKE.

APPLIGATION FILED JUNE 18,1913.

Patented Dec. 15, 1914.

4 SHEETSBHEET 1.

DIE PRESS MECHANISM OR THE LIKE.

APPLICATION FILED JUNE 16. 1913.

Patented Dec. 15, 1914.

4 SHEETS-SHEET 2.

\. w x .7 1 i. Z li" k PWWQ-WIW'I N% WSQIT/WEQ mw QM 9 mm N m hm ww Q, 712: i QM i m 1 i PM @Q f h MR EN 11 1? f. k I w MM \Y MW Nxkli iwillvkrll- Q \N mm Rn & Q

G. D. MQDONALD & G. B. ENNES.

DIE PRESS MECHANISM OR THE LIKE.

APPLICATION FILED JUNE 18, 1913.

1,121,971. Patented Dec. 15,1914.

4 SHEETS-SHEET 3.

fiarZasZ C. D. MQDONALD & G. B. ENNES.

DIE PRESS MECHANISM OR THE LIKE.

APPLICATION FILED JUNE 16, 1913.

Patented Dec. 15, 1914.

4 SHEETS-SHEET4.

s arm MN WNW mm, wb

s'ra'rns PATEN FFICE.

CHABLES D. MQDONALD AND CHARLES E. ENNES, OF CHICAGO, ILLINOIS,ASSIGNOBS TO MCDONALD MACHINE 00., OF CHICAGO, ILLINOIS, A CORBOBATIONOF ILLINOIS.

DIE-PRESS MECHANISM on rrm LIKE,

Application filed June 16, 1913.

. more dies.

T he objects of the present invention are to provide a feed mechanismfor carrying the work into position to be acted upon by the dies. whichmechanism will impart to the work an initial feed movement greater thanthe subsequent feed movements; to bring about this increased movement byan amplification of the normal movement of the feed mechanism: and toprovide means for plac ing oil over the surface of the work prior totheoperation of the dies upon the work.

The invention further consists in the features of construction andcombination of parts hereinafter described and claimed.

In the drawings: Figure 1 1s a front elevation of a die press equippedwith the mechanism of the present invention; Fig. 2 an enlarged detailof the rear portion of the feed bar showing the initial feeding memberin position to. commence the feeding operation; Fig. 3 a-view similar toFig. '2 showing the position that the parts assume after the initialfeeding member has completed its feeding operation; Fig. 4 a detail planview of the parts shown in Figs. 2 and 3: Fig. 5 an end view of theparts shown in Figs. 2 and 3; Fig. 6 an enlarged detail showing a sideelevation of one of the feeding members; Fig. 7 a plan view of the partsshown in Fig. 6 with certain portions partially broken away; Fig. 8 across sec tion of the feed bar and feeding member; Fig. 9 a diagrammaticview showing the relative position between the work and dies prior tothe commencement of the feeding operation; Fig. 10 a view similar toFig. 9 showing the relative position between the die and the work uponthe completion of the initial feeding movement; Fig. 11 a view similarto Figs. 9 and 10 showing the relation between the dies and the workupon the Specification of Letters Eatent.

Patented. Dec. 15,1914.

Serial No. 774,067.

completion of a subsequent feeding movement; Fig. 12 a. face view of themechanism for spreading the oil over the surface of the work; Fig. 13 asection on line 1313 of Fig. 12 looking in the direction of the arrow;Fig. 14 a view looking at one end of the parts shown in Fig. 12; andFig. 15 a cross section through one of the rolls shown in Fig. 12.

The novel arrangement of the feeding mechanism is very applicable foruse with multiple die presses, for the reason that, in feeding the workto the dies, a relatively long initial feeding movement must be giventhe same, which will carry it across the surface of the first die and,up to the edge of the second die; after this, the work is fed with astep by step movement a distance a trifle greater than the diameter ofthe cutting edge of the die. The present invention deals with amechanism for carrying out a feeding operation as above described, whichwill so operate as not to bend or mutilate the edge of the work byreason of the long initial feeding stroke. That portion of the presentinvention relating to the placing of oil on the surface of the work isnot limited in any way to use with double die presses, but is adaptedfor use with any style of press desired. The oiling operation eliminatesany tearing or defacing of the work. when the work is subjected to adrawing op eration, which is an operation that will bend the work, as,for instance, form a flange when an article, such as a cap. is beingformed. and is of benefit when the work has a printed or decorativesurface, or when a deep draw is made, as in such cases it has been foundthat the surface of the die in passing over the surface of the work toperform the drawing operation willstick, tearing the work in case of adeep draw, or marring the decorative surface of the work, the latterbeing true whether the draw be deep or shallow.

Referring to the drawings, and particularly to Fig. 1, a die press istherein illustrated which is similar to the die press shown in PatentNo. 1,039,565, issued September 24, 1912, to Charles D. McDonald,

for metal working machines. The present invention deals moreparticularly with the than those which may relate to the abovemechanisms. The press, as illustrated, is of a-double'die type, andconsists of com-' panion die members 16 operated by any suitablemechanism, For the purpose of feeding the work up into position to beacted upon by these die members, we employ a feed bar 1?, bestillustrated in Figs. 2 to 8 inclusive. This bar consists of a bodyportion 18 provided with a T-shaped slot 19, and the bar terminates atits forward end in a threaded stem-like portion 20, to which is secureda sleeve 21, which sleeve is locked in place upon the stemlike portionby suitable locking members 22. This sleeve is connected by a link orbar 23'to an arm 24 of a crank 25, which is operated by a connection 26,best shown in Fig. 1, from the main drive shaft. The connection betweenthe drive shaft and the feed bar is such that the rotary motion of thedrive shaft will communicate and impart a reciprocating movement to thefeed bar.

The feed bar has mounted thereon an initial feed member 27 and what maybe termed a series of subsequently acting feed members 28. The initialfee members consist of a finger 29 mounted on a block 30, which blockhas its under face configured to conform to the T-shaped configurationof the slot 19, and this block 30 is at all times freely movable in theslot 19. The finger 29 is pivoted as at 31, and is normally held at aslight upward inclination by a spring 32.. A lug or abutment 33 isformed on the block 30, which serves to arrest and limit the movementsof the finger about the pivot 31. Connected to this block 30 is alink34, which in turn is attached to one end of an arm 35 pivotally securedto a bracket 36. The arm 35 is provided with a slot 37, through whichextends. a pin 38, and mounted to rock upon this pin is a bearing 39'for one end of a threaded stem 40. This stem 40 has its other endpivotally attached to an ear 41 secured .to the sleeve 21.

The feeding members 28 are each alike in configuration, and areillustrated more 7 in detail in Figs. 6, 7, and 9. Each con sists of, afinger 42 mounted on a block 43. This block is T-sha'ped in crosssection, as

will be seen from Fig. 8, and is of similarto hold the finger 42normally at a slight upward inclination as in Fig. 6.

The operation of this portion of the device'is as follows: Upon motionbeing imparted to'the crank 25, the feed bar 17 is reciprocated. Bymeans of the connection consisting of the ear 41, the stem 40, arm 35,and link 34, this reciprocating movement is communicated from the feedbar to the initial feeding movement 27, but, as will be obvious, thismovement is amplified owing to the nature of the connection, and thus,when the feed bar travels a stroke of, say, three inches, a movement.of, say, four and a half inches, might be imparted to the initialfeeding member. It is, of course, understood that these distances aremerely given for illustrative purposes, the idea intended to be conveyedis that the initial feeding member will be given a movement greater thanthe normal movement of the feed bar. Thus, upon the first stroke of thefeed bar, the work is fed by the initial feeding member a distancegreater than the normal feeding stroke, so that the work, in double diepresses, on the first feeding movement is carried clear across the rstdie, and up to the cutting edge of the second die. After this movementthe work is fed by the action of the subsequent feeding members 28.These members are fixedly held with respect to the feeding bar, and, ofcourse, move the same distance as the feed bar. Thus, after the initialfeeding operation, the work is fed forward with a step by step movement,each step being slightly greater than the diameter of the cutting faceof the die and equal to the stroke of the feed bar. By arranging theconnection between the stem 40 and the arm 35 a greater or less movementcan be imparted to the initial feed members. It is obvious that, as theconnection is moved toward the lower end of the slot 37, the power willbe applied closer to the fulcrum of the arm 35, and thus a greaterdegree of movement is imparted to said arm.

The various positions assumed by the work with respect to the die willbe clearly understood by reference to Figs. 9, 10, and 11. In Fig. 9,which shows the position prior to the initial feeding movement, thework. 47 is located slightly to the rear of the first of the dies 16. InFig. 10, which shows the positionafter the initial feeding movement, itwill be seen that the work has been forced clear across the first of thedies 16, and up to within a short distance of the and a hole 48 has beenproduced by the action of the first die. Now by referring to cuttingedge of the second of the dies 16,

Fig. 11, which shows the position of the sec 0nd feeding movement, itwill be seen that the work has been pushed across the second die, andholes 49 are cut by. the first and shown, is located at the terminus ofthe slot to which the work is pushed by the feed bar, and acts on thework just before it is placed on the table of the die mecha nism. Thedevice, as shown, consists of two rollers, an upper roller 50 and alower roller 51, each of which is mounted on a shaft, as best shown inFig. 152, the roller 50 on a shaft 52, and the roller 51 on a shaft 53.The rollers have secured thereto a pinion 54, and a pulley 55 isattached to the shaft 52, and, as shown in F ig. l, is driven by a belt56 which is actuated by the operation of the main driving shaft in anysuitable manner. Each of the rollers, as shown in Fig. 15, is providedwith a cover 57 of an absorbent nature, which covering is saturated withoil or grease, and the work in passing between these rollers has itssurface covered with the oil from said cover. At this point it should bestated that wherever the term oil is used, it refers to any sort of oilyor greasy substance which would be suitable for the purpose intended.These rollers are continuously driven, but donot engage the work withsufficient friction to effect any feeding movement thereof, this latterbeing done solely by the. action of the feeding bar. As shown in Figs.12, 13, and 14, the last one of the feed members 28 projects through thespace between the shafts 52 and 53, and shoves the work from between therollers 50 and 51. The upper of the rollers is held in place by springs59, and the bearing in which the shaft 52 is mounted is of an ellipticalformation, as shown in Figs. 13 and 14, so that the shaft has a slidingmovement in the same. This permits the rollers to accommodate themselvesto varyin thicknesses of work. The operation of this portion of thedevice is obvious; the action of the feed members.

attached to the feed bar forces the work through the space 60 betweenthe rollers, and the rollers by their action spread a surface of greaseor oil over the work, so that, when the work is acted upon by the dies,the danger of a printed or other decorative surface becoming damagedduring a drawing operation, or the work becoming torn in case of a deepdraw is eliminated.

We claim:

1. The combination with double acting die mechanism of means for feedingthe work into position to be acted upon by the dies comprising a seriesof feed members,

and means operatively connected for actuating said feedmembers wherebythe work is fed a distance upon the initial movement to carry it' acrossone die and approximately. to the cutting edge of the other die and fedupon the subsequent feeding movements at distance at least e ual to thediameter of one of said dies, su stantially as described.

2. The combination with double acting die mechanism of means for feedingthe work in position to be acted upon by the dies comprising a series offeeding members and means operatively connected for actuatin saidfeeding members whereby the wor r is fed a distance upon the initialfeed ing movement to carry it across one die and approximately up to thecutting edge of the other die and fed upon the subsequent feedmgmovements a distance at least equal to the diameter of one of said dies,substantially as described.

3. In die press mechanism or the like, the combination of means forfeeding the work into position to be acted upon, comprising a feed bar,a series of feed members carried by said bar, means operativelyconnected for reciprocating the bar. and means opcratively connected forimparting to the initially act ing feed member a movement in excess ofthe normal movement of the feed bar, substantially as described.

4. In die press mechanism or the like, the combination of means forfeeding the work into position to be acted upon, comprising a feed bar,a series of feed members carried by said bar, means operativelyconnected for reciprocating the bar, means operatively connected forimparting to the initial feed member a movement in excess of the normalmovement of the feed bar, and means for adjusting the length of movementof the initially acting feed member, substantially as described.

5. In die press mechanism or the like, the combination of means forfeeding the work into position to be acted upon, comprising a feedbar, aseries of feed members carried by said bar, means operatively connectedfor reciprocating the feed bar, and means operatively connected andcontrolled directly by the movements of the feed bar for imparting tothe initially acting feed member a movement in excess of the normalmovement of the feed bar, substantially as described.

6. In die press mechanism or the like, the combination of means forfeeding the work into position to be acted upon, comprisin a feed bar, aseries of feed members carrieddiy said bar, the initial of said membersbeing normally movable with respect to the feed bar, means for holdingthe remainder of said members fixed with respect to said bar, meansoperatively connected for reciprocating the bar, and a connectionbetween said bar and initial feed member for amplifying ion normallymovable with respect to the feed bar, means for holding the remainder ofsaid members fixed with respect to said bar, means operatively connectedfor reciprocating the bar, a connection between said bar and initialfeed member for amplifying the normal movement of the bar and impartingto the initial feed member a movement 1n excess of the movement impartedto the remaining feed members, and means for adjusting the degree ofmovement of the initial feed members, substantially as described.

k 8. In diepress mechanism or the like, the combination of means forfeeding the work into position to be acted upon, comprising a feed bar,a series of feed members carried by said bar, the initial of saidmembers being normally movable with respect to the feed bar, means forholding the remainder of said members fixed with respect to saidbar,means for reciprocating the bar, and a swinging arm operativelyconnected to theinitial feed member and to the feed bar and serving toamplify the movements of the feed bar, whereby an increased movement'isimparted to the initial feed member over.

that given tothe teed bar, substantially as described.

Qrln die press-mechanism or the like, the combination of means forfeeding the work into position to be acted upon, comprising a feed bar,a 'series of feed members carried by said bar, the initial of saidmembers being normally movable with respect to the feed bar, means forholding the remainder of said members fixed with respect to said bar,means for reciprocating the bar, a swinging arm operatively connected tothe initial feed member and to the feed bar and servin to amplify themovements of the feed ar, whereby an increased movement is imparted tothe initial teed member over that given to the feed bar, and means foradjusting the connection between said bar and initial feed member forvarying the degree of movement imparted to said initial feed member,substantially as described.

10. In die press mechanism or the like, the-combination of means forimparting an initiatory feed movement to the work, means for impartingsubsequent feed movements to the work, and means for imparting a greaterdegree of movement to the initiatory feeding means than tothe-subsequent feed ing means, substantially as described. I

1'1. In die press mechanism or the like,

' the combination of means for imparting an initiatory feed movementto'the work, afeed bar, feeding members fixed with respect to said barand adapted to impart subsequent feeding movements to the work, meansfor actuating said bar and means operatively connected to said baractuating means for actuating the initiatory feeding means with agreater'movement than the movement of the bar, substantially asdescribed.

, CHARLES D. MCDONALD.

"Witnesses:

'- FRED J; S'rnvnns, 7JAMES C. Hume.

'GHAS. E. ENNES. f

